3D Bismuth Ferrite Microflowers Electrochemical Sensor for the Multiple Detection of Pesticides

Abstract

A plethora of scientific researches has constantly studied the electrochemical detection of different pesticides due to their serious effects on humans. Imidacloprid (IMD) is a pesticide that belongs to the neonicotinoids group. In the current work, a carbon paste electrode (CPE) modified with bismuth ferrite microflowers (BiFeO 3 /CPE) was used for sensing of IMD in water samples in the presence of fipronil (FIP). The modifier (BiFeO 3 ) was characterized by different techniques. To evaluate the efficiency of the developed electrode towards the detection of both IMD and FIP in water samples, the square wave voltammetry (SWV) technique was employed and spiked water samples were used. The calibration curves were within the range of 1.0-100.0 μM for both analytes. The detection limits (LODs) for IMD and FIP were determined as 0.97 μM and 0.81 μM, respectively. The recovery percentages for IMD and FIP in environmental water samples varied from 90.0%-105.0%. In conclusion, the developed sensor was successfully optimized and can be used for the simultaneous detection of both IMD and FIP in environmental water samples.

Optimising Adsorptive Stripping Voltammetry: Strategies and Limitations

“…The wide use of fipronil has raised concerns because of the residual fipronil present in soil or aquatic ecosystems [20,23] given its threat to human health [24] . The methods reported for the analysis of fipronil are mostly chromatographic, [25] while recently some cheap and rapid techniques have emerged [26] including a few electrochemical methods [26c–h] . The method we evaluate in the present paper employing AdsSV on the aforementioned carbon electrodes, particularly on a CNT modified surface can be seen in principle as an electroanalytical method alternative to the existing analytical methods for fipronil determination.…”

Core‐shell Hierarchical Enzymatic Biosensor Based on Hyaluronic Acid Capped Copper Ferrite Nanoparticles for Determination of Endocrine‐disrupting Bisphenol A

“…Ferrites are often used as versatile gas detection materials, offering high sensitivity, selectivity and long‐term stability [61]. Although ferrite structures have been used as one of the components of various composite systems for the detection of analytes such as dopamine [62], pesticides [63], paracetamol [64] in recent years sensor designs containing BPA very few ferrite structures are encountered. As seen in Table 1, these structures generally didn't contain any modification process on their surfaces and they were not enzymatic systems [11,31b, 57].…”

3D‐Architectured MoS2‐Microflower‐Modified Electrodes toward Electrochemical Determination of Imidacloprid

“…[4,5] Moreover, the extensive usage of IMI of around 41.5 % in the neonics market has increased their persistence in the environment and agricultural products. [6] The resulting contamination of natural resources such as water, soil and air cause hazardous effects to both biosphere and human health. [7][8][9] So, it is extremely necessary to develop efficient analytical approaches for the sensitive and rapid determination of IMI in the environment and agricultural products.…”

“…Although IMI is comparatively less toxic to mammals, it has a high ‐ risk impact on pollinators (honeybees) and aquatic invertebrates [4,5] . Moreover, the extensive usage of IMI of around 41.5 % in the neonics market has increased their persistence in the environment and agricultural products [6] . The resulting contamination of natural resources such as water, soil and air cause hazardous effects to both biosphere and human health.…”